bus: hook up client with socket communication

1 files changed, 242 insertions, 0 deletions

diff --git a/src/libsystemd-bus/test-bus-chat.c b/src/libsystemd-bus/test-bus-chat.c
new file mode 100644
index 0000000000..4260ca3bc0
--- /dev/null
+++ b/src/libsystemd-bus/test-bus-chat.c
@@ -0,0 +1,242 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2013 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <assert.h>
+#include <stdlib.h>
+#include <pthread.h>
+
+#include "log.h"
+#include "util.h"
+
+#include "sd-bus.h"
+#include "bus-message.h"
+
+static int server_init(sd_bus **_bus) {
+        sd_bus *bus = NULL;
+        int r;
+
+        assert(_bus);
+
+        r = sd_bus_open_user(&bus);
+        if (r < 0) {
+                log_error("Failed to connect to user bus: %s", strerror(-r));
+                goto fail;
+        }
+
+        r = sd_bus_request_name(bus, "org.freedesktop.systemd.test", 0);
+        if (r < 0) {
+                log_error("Failed to acquire name: %s", strerror(-r));
+                goto fail;
+        }
+
+        *_bus = bus;
+        return 0;
+
+fail:
+        if (bus)
+                sd_bus_unref(bus);
+
+        return r;
+}
+
+static void* server(void *p) {
+        sd_bus *bus = p;
+        int r;
+
+        for (;;) {
+                _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
+
+                r = sd_bus_process(bus, &m);
+                if (r < 0) {
+                        log_error("Failed to process requests: %s", strerror(-r));
+                        goto fail;
+                }
+                if (r == 0) {
+                        r = sd_bus_wait(bus, (uint64_t) -1);
+                        if (r < 0) {
+                                log_error("Failed to wait: %s", strerror(-r));
+                                goto fail;
+                        }
+
+                        continue;
+                }
+
+                log_info("Got message! %s", strna(sd_bus_message_get_member(m)));
+                /* bus_message_dump(m); */
+                /* sd_bus_message_rewind(m, true); */
+
+                if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "LowerCase")) {
+                        const char *hello;
+                        _cleanup_free_ char *lowercase = NULL;
+
+                        r = sd_bus_message_read(m, "s", &hello);
+                        if (r < 0) {
+                                log_error("Failed to get parameter: %s", strerror(-r));
+                                goto fail;
+                        }
+
+                        r = sd_bus_message_new_method_return(bus, m, &reply);
+                        if (r < 0) {
+                                log_error("Failed to allocate return: %s", strerror(-r));
+                                goto fail;
+                        }
+
+                        lowercase = strdup(hello);
+                        if (!lowercase) {
+                                r = log_oom();
+                                goto fail;
+                        }
+
+                        ascii_strlower(lowercase);
+
+                        r = sd_bus_message_append(reply, "s", lowercase);
+                        if (r < 0) {
+                                log_error("Failed to append message: %s", strerror(-r));
+                                goto fail;
+                        }
+                } else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "Exit"))
+                        break;
+                else if (sd_bus_message_is_method_call(m, NULL, NULL)) {
+                        const sd_bus_error e = SD_BUS_ERROR_INIT_CONST("org.freedesktop.DBus.Error.UnknownMethod", "Unknown method.");
+
+                        r = sd_bus_message_new_method_error(bus, m, &e, &reply);
+                        if (r < 0) {
+                                log_error("Failed to allocate return: %s", strerror(-r));
+                                goto fail;
+                        }
+                }
+
+                if (reply) {
+                        r = sd_bus_send(bus, reply, NULL);
+                        if (r < 0) {
+                                log_error("Failed to send reply: %s", strerror(-r));
+                                goto fail;
+                        }
+                }
+        }
+
+        r = 0;
+
+fail:
+        if (bus)
+                sd_bus_unref(bus);
+
+        return INT_TO_PTR(r);
+}
+
+static int client(void) {
+        _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
+        sd_bus *bus = NULL;
+        sd_bus_error error = SD_BUS_ERROR_INIT;
+        const char *hello;
+        int r;
+
+        r = sd_bus_open_user(&bus);
+        if (r < 0) {
+                log_error("Failed to connect to user bus: %s", strerror(-r));
+                goto finish;
+        }
+
+        r = sd_bus_message_new_method_call(
+                        bus,
+                        "org.freedesktop.systemd.test",
+                        "/",
+                        "org.freedesktop.systemd.test",
+                        "LowerCase",
+                        &m);
+        if (r < 0) {
+                log_error("Failed to allocate method call: %s", strerror(-r));
+                goto finish;
+        }
+
+        r = sd_bus_message_append(m, "s", "HELLO");
+        if (r < 0) {
+                log_error("Failed to append string: %s", strerror(-r));
+                goto finish;
+        }
+
+        r = sd_bus_send_with_reply_and_block(bus, m, (uint64_t) -1, &error, &reply);
+        if (r < 0) {
+                log_error("Failed to issue method call: %s", error.message);
+                goto finish;
+        }
+
+        r = sd_bus_message_read(reply, "s", &hello);
+        if (r < 0) {
+                log_error("Failed to get string: %s", strerror(-r));
+                goto finish;
+        }
+
+        assert(streq(hello, "hello"));
+
+        r = 0;
+
+finish:
+        if (bus) {
+                _cleanup_bus_message_unref_ sd_bus_message *q;
+
+                r = sd_bus_message_new_method_call(
+                                bus,
+                                "org.freedesktop.systemd.test",
+                                "/",
+                                "org.freedesktop.systemd.test",
+                                "Exit",
+                                &q);
+                if (r < 0) {
+                        log_error("Failed to allocate method call: %s", strerror(-r));
+                        goto finish;
+                }
+
+                sd_bus_send(bus, q, NULL);
+                sd_bus_flush(bus);
+                sd_bus_unref(bus);
+        }
+
+        sd_bus_error_free(&error);
+        return r;
+}
+
+int main(int argc, char *argv[]) {
+        pthread_t t;
+        sd_bus *bus;
+        void *p;
+        int q, r;
+
+        r = server_init(&bus);
+        if (r < 0)
+                return EXIT_FAILURE;
+
+        r = pthread_create(&t, NULL, server, bus);
+        if (r != 0) {
+                sd_bus_unref(bus);
+                return EXIT_FAILURE;
+        }
+
+        r = client();
+
+        q = pthread_join(t, &p);
+        if (q != 0)
+                return EXIT_FAILURE;
+        if (r < 0)
+                return EXIT_FAILURE;
+
+        return EXIT_SUCCESS;
+}